A collection of noninvasive devices intended to be used to conduct electrical signals from a patient's heart, via an electrode attached to the surface of the chest/limbs, to an electrocardiograph (ECG) machine or a patient monitoring system. It includes an insulated metal wire(s) with a detachable or permanently attached electrode, and may include a cable with connector; some types may be designed as a pre-configured array (e.g., EEG belt) to assist electrode placement. This is a reusable device.